I can confirm it works in iOS 16.1 beta 4, however it still does not work on my other devices run iOS 14 and iOS 15.
Btw, do you know how to create a thumbnail with transparent part? My file thumbnails always have a white background, if I don't draw the image on the whole context. I tried context.flush, context.clearRect() without success. My file thumbnails looks not so great in light mode and even worse in dark mode
quochuywdm
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